# Can Nitrous Oxide (Laughing Gas) be Used as a Sedative for GI Endoscopy Procedures?

> **NCT05396144** · PHASE4 · WITHDRAWN · sponsor: **Stanford University**

## Conditions studied

- Endoscopy
- Colonoscopy

## Interventions

- **DRUG:** 5% inhaled nitrous oxide
- **DRUG:** 50% inhaled nitrous oxide

## Key facts

- **NCT ID:** NCT05396144
- **Lead sponsor:** Stanford University
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** WITHDRAWN
- **Start date:** 2024-05-01
- **Primary completion:** 2025-08-31
- **Final completion:** 2025-08-31
- **Target enrollment:** 0 (ACTUAL)
- **Why stopped:** We do not have access to the patient population anymore due to a move in our operational design
- **Last updated:** 2026-03-27


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05396144

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05396144, "Can Nitrous Oxide (Laughing Gas) be Used as a Sedative for GI Endoscopy Procedures?". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT05396144. Licensed CC0.

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